diff --git a/theme/plugins/assets/__init__.py b/theme/plugins/assets/__init__.py
new file mode 100644
index 0000000..67b75dd
--- /dev/null
+++ b/theme/plugins/assets/__init__.py
@@ -0,0 +1 @@
+from .assets import *
diff --git a/theme/plugins/assets/assets.py b/theme/plugins/assets/assets.py
new file mode 100644
index 0000000..e204dd6
--- /dev/null
+++ b/theme/plugins/assets/assets.py
@@ -0,0 +1,75 @@
+# -*- coding: utf-8 -*-
+"""
+Asset management plugin for Pelican
+===================================
+
+This plugin allows you to use the `webassets`_ module to manage assets such as
+CSS and JS files.
+
+The ASSET_URL is set to a relative url to honor Pelican's RELATIVE_URLS
+setting. This requires the use of SITEURL in the templates::
+
+    <link rel="stylesheet" href="{{ SITEURL }}/{{ ASSET_URL }}">
+
+.. _webassets: https://webassets.readthedocs.org/
+
+"""
+from __future__ import unicode_literals
+
+import os
+import logging
+
+from pelican import signals
+logger = logging.getLogger(__name__)
+
+try:
+    import webassets
+    from webassets import Environment
+    from webassets.ext.jinja2 import AssetsExtension
+except ImportError:
+    webassets = None
+
+def add_jinja2_ext(pelican):
+    """Add Webassets to Jinja2 extensions in Pelican settings."""
+
+    if 'JINJA_ENVIRONMENT' in pelican.settings: # pelican 3.7+
+        pelican.settings['JINJA_ENVIRONMENT']['extensions'].append(AssetsExtension)
+    else:
+        pelican.settings['JINJA_EXTENSIONS'].append(AssetsExtension)
+
+
+def create_assets_env(generator):
+    """Define the assets environment and pass it to the generator."""
+
+    theme_static_dir = generator.settings['THEME_STATIC_DIR']
+    assets_destination = os.path.join(generator.output_path, theme_static_dir)
+    generator.env.assets_environment = Environment(
+        assets_destination, theme_static_dir)
+
+    if 'ASSET_CONFIG' in generator.settings:
+        for item in generator.settings['ASSET_CONFIG']:
+            generator.env.assets_environment.config[item[0]] = item[1]
+
+    if 'ASSET_BUNDLES' in generator.settings:
+        for name, args, kwargs in generator.settings['ASSET_BUNDLES']:
+            generator.env.assets_environment.register(name, *args, **kwargs)
+
+    if 'ASSET_DEBUG' in generator.settings:
+        generator.env.assets_environment.debug = generator.settings['ASSET_DEBUG']
+    elif logging.getLevelName(logger.getEffectiveLevel()) == "DEBUG":
+        generator.env.assets_environment.debug = True
+
+    for path in (generator.settings['THEME_STATIC_PATHS'] +
+                 generator.settings.get('ASSET_SOURCE_PATHS', [])):
+        full_path = os.path.join(generator.theme, path)
+        generator.env.assets_environment.append_path(full_path)
+
+
+def register():
+    """Plugin registration."""
+    if webassets:
+        signals.initialized.connect(add_jinja2_ext)
+        signals.generator_init.connect(create_assets_env)
+    else:
+        logger.warning('`assets` failed to load dependency `webassets`.'
+                       '`assets` plugin not loaded.')